I have nothing against MDF, in fact, it's wonderful stuff. I do suggest looking at HDPE or UHMW. This is what the OP fences are made of, I've used mine for several yrs now and haven't had any trouble with them.
Just remembered, there are some aluminum fences. I believe Bj has made a few.
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"Whether active duty, retired, national guard or reserve - is someone who, at one point in their life, wrote a blank check made payable to "The United States of America", for an amount of "up to and including my life". That is HONOR, and there are way too many people in this country who no longer understand it." -Author Unknown
Last edited by Hamlin; 03-27-2009 at 10:39 AM.
Reason: added info